body{
  padding: 0;
  margin: 0;
  /*background-image:linear-gradient(*/
  /*  to bottom,*/
  /*  rgb(255,255,255,0.8),*/
  /*  rgb(255,255,255,0)*/
  /*),url("https://cn.bing.com//th?id=OHR.ReconquistaVigo_ZH-CN4619580424_1920x1080.jpg&rf=LaDigue_1920x1080.jpg&pid=hp");*/
  /*background-size: cover;*/

  -webkit-user-select: none; /* Safari */
  -moz-user-select: none;    /* Firefox */
  -ms-user-select: none;     /* IE/Edge */
  user-select: none;         /* 标准语法 */
  background-color: #FFF3ff;
}